Charles Cagniard de la Tour, Date of Birth, Place of Birth, Date of Death

Charles Cagniard de la Tour

French physicist

Date of Birth: 31-Mar-1777

Place of Birth: Paris, Île-de-France, France

Date of Death: 05-Jul-1859

Profession: engineer, combat engineer, physicist

Nationality: France

Zodiac Sign: Aries

Baron Charles Cagniard de la Tour (31 March 1777 – 5 July 1859) was a French engineer and physicist.
Charles Cagniard was born in Paris, and after attending the École Polytechnique became one of the ingénieurs géographiques.
He examined the mechanism of voice-production, invented a blowing machine and contributed to acoustics by inventing an improved siren.
He also studied yeast. In 1822, he discovered the critical point of a substance in his cannon barrel experiments.
Listening to discontinuities in the sound of a rolling flint ball in a sealed cannon filled with fluids at various temperatures, he observed the critical temperature.
Above this temperature, the densities of the liquid and gas phases become equal and the distinction between them disappears, resulting in a single supercritical fluid phase. He was made a baron in 1818.
He died in Paris.